Vickers indentation test was used to study the effects of mineral composition and microstructure on crack resistance of sintered ore, and the initiation and propagation of cracks in different minerals contained in sintered ore were examined. The results indicate that the microstructure of calcium ferrites is a major factor influencing crack resistance of sintered ore. Finer grain size of calcium ferrite will lead to higher cracking threshold and better crack resistance of sintered ore. The formation of calcium ferrite with fine grain size during sintering process is favorable for crack resistance of sintered ore.
参考文献
[1] | Loo C E;Wan K T;Howes V R .Mechanical Properties of Natural and Synthetic Mineral Phases in Sinters Having Varying Reduction Degradation Indices[J].Ironmaking and Steelmaking,1998,15(06):279-285. |
[2] | M.Matsumura .Technical subjects for manufacturing low slag sinter[J].材料とプロセス,2000(4):718-721. |
[3] | Shigaki Ichiro;Sawada Mineo;Gennai Norio .Increase in Low-Temperature Reduction Degradation of Iron Ore Sinter due to Hematite-Alumina Solid Solution and Columnar Calcium Ferrite[J].Transactions of the Iron and Steel Institute of Japan,1986,26(04):503-511. |
[4] | Rodney D Dukino;Michael V Swain .Comparative Measurement of Indentation Fracture Toughness With Berkovich and Vickers Indenters[J].Journal of the American Ceramic Society,1992,75(12):3299-3304. |
[5] | Evans A G;Chrles E A .Fracture Toughness Determinations by Indentation[J].Journal of the American Ceramic Society,1976,59(7-8):371-372. |
[6] | Lawn B R;Evans A G;Marshall D B .Elastic/Plastic Indentation Damage in Ceramics:the Median/Radial Crack System[J].Journal of the American Ceramic Society,1980,63(9-10):574-581. |
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